Speed reducer for retractable screen systems



FIG. 1 is a perspective view of a speed reducer for retractable screensystems illustrating my new design;

FIG. 2 is an enlarged perspective view of a speed reducer of FIG. 1;

FIG. 3 is an enlarged front elevational view thereof, the undisclosedrear view being identical;

FIG. 4 is an enlarged right side elevational view thereof, theundisclosed left side view being identical;

FIG. 5 is an enlarged top plan view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof.

The broken line showing of a retractable screen in FIG. 1 is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for a speed reducer for retractable screensystems, as shown and described.